Diamante Sedan V6-3.5L SOHC (1999)
Idle Speed: Testing and Inspection
Curb Idle Speed Check
1. Before inspection, set the vehicle to the following condition.
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Engine coolant temperature: 80 - 95°C (176 - 203°F)
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Lights and all accessories: OFF
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Transmission: Neutral (P for A/T).
2. Check the basic ignition timing.
Standard value: 5° BTDC ± 3°
3. After turning the ignition switch to OFF, connect a tachometer or the scan tool to the data link connector (white).
NOTE: For the procedures for setting the tachometer, see Ignition Timing
4. Start the engine and run it at idle.
5. Run the engine at idle for 2 minutes.
6. Check the curb idle speed.
Standard value: 700 ± 100 r/min
NOTE: The idle speed is adjusted automatically by the Idle Air Control (IAC) system.
7. If there is a deviation from the standard value, refer to Powertrain Management, Computers and Controls, Diagnosis By Symptom.
